import Vue from 'vue'
import Router from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import GoodsList from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'
import Order from '../components/order/Order.vue'
import Report from '../components/report/Report.vue'
import '../plugins/element.js'
import '../assets/css/global.css'

Vue.use(Router)

// const router = new VueRouter({

// })

const router = new Router({
  routes: [
    { path: '/', redirect: '/login' },
    { path: '/login', component: Login },
    {
      path: '/home',
      component: Home,
      redirect: '/welcome',
      children: [
        { path: '/welcome', component: Welcome },
        { path: '/users', component: Users },
        { path: '/rights', component: Rights },
        { path: '/roles', component: Roles },
        { path: '/categories', component: Cate },
        { path: '/params', component: Params },
        { path: '/goods', component: GoodsList },
        { path: '/goods/add', component: Add },
        { path: '/orders', component: Order },
        { path: '/reports', component: Report }
      ]
    }
  ]
})
// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  // to：将要访问的路径
  // from: 代表从哪个路径跳转而来
  // next: 是一个函数，表示放行
  // next() 放行  next('/login') 强制跳转

  if (to.path === '/login') return next()
  // 如果访问有权限的页面，需要先获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) {
    alert('请先登录')
    return next('/login')
  }
  next()
})
export default router
